if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[fn_GetLunar]') and xtype in (N'FN', N'IF', N'TF'))
drop function [dbo].[fn_GetLunar]
GO

CREATE FUNCTION fn_GetLunar
(@solarDay DATETIME)    
RETURNS varchar(200)
AS
BEGIN    
DECLARE @solData int    
DECLARE @offset int    
DECLARE @iLunar int    
DECLARE @i INT     
DECLARE @j INT     
DECLARE @yDays int    
DECLARE @mDays int    
DECLARE @mLeap int    
DECLARE @mLeapNum int    
DECLARE @bLeap smallint    
DECLARE @temp int    
    
DECLARE @YEAR INT     
DECLARE @MONTH INT    
DECLARE @DAY INT    
      
DECLARE @OUTPUTDATE varchar(100)

--保证传进来的日期是不带时间    
SET @solarDay=cast(@solarDay AS char(10))    
SET @offset=CAST(@solarDay-'1900-01-30' AS INT)


--确定农历年开始    
SET @i=1900    
--SET @offset=@solData    
WHILE @i<2050 AND @offset>0    
BEGIN    
    SET @yDays=348    
    SET @mLeapNum=0    
    SELECT @iLunar=temp.dataInt FROM 
    (select 1900 as yearid,'0x04bd8' as data,19416 as dataint union all select 1901,'0x04ae0',19168 
			union all select 1902,'0x0a570',42352 union all select 1903,'0x054d5',21717 
			union all select 1904,'0x0d260',53856 union all select 1905,'0x0d950',55632 
			union all select 1906,'0x16554',91476 union all select 1907,'0x056a0',22176 
			union all select 1908,'0x09ad0',39632 union all select 1909,'0x055d2',21970 
			union all select 1910,'0x04ae0',19168 union all select 1911,'0x0a5b6',42422 
			union all select 1912,'0x0a4d0',42192 union all select 1913,'0x0d250',53840 
			union all select 1914,'0x1d255',119381 union all select 1915,'0x0b540',46400 
			union all select 1916,'0x0d6a0',54944 union all select 1917,'0x0ada2',44450 
			union all select 1918,'0x095b0',38320 union all select 1919,'0x14977',84343 
			union all select 1920,'0x04970',18800 union all select 1921,'0x0a4b0',42160 
			union all select 1922,'0x0b4b5',46261 union all select 1923,'0x06a50',27216 
			union all select 1924,'0x06d40',27968 union all select 1925,'0x1ab54',109396 
			union all select 1926,'0x02b60',11104 union all select 1927,'0x09570',38256 
			union all select 1928,'0x052f2',21234 union all select 1929,'0x04970',18800 
			union all select 1930,'0x06566',25958 union all select 1931,'0x0d4a0',54432 
			union all select 1932,'0x0ea50',59984 union all select 1933,'0x06e95',28309 
			union all select 1934,'0x05ad0',23248 union all select 1935,'0x02b60',11104 
			union all select 1936,'0x186e3',100067 union all select 1937,'0x092e0',37600 
			union all select 1938,'0x1c8d7',116951 union all select 1939,'0x0c950',51536 
			union all select 1940,'0x0d4a0',54432 union all select 1941,'0x1d8a6',120998 
			union all select 1942,'0x0b550',46416 union all select 1943,'0x056a0',22176 
			union all select 1944,'0x1a5b4',107956 union all select 1945,'0x025d0',9680 
			union all select 1946,'0x092d0',37584 union all select 1947,'0x0d2b2',53938 
			union all select 1948,'0x0a950',43344 union all select 1949,'0x0b557',46423 
			union all select 1950,'0x06ca0',27808 union all select 1951,'0x0b550',46416 
			union all select 1952,'0x15355',86869 union all select 1953,'0x04da0',19872 
			union all select 1954,'0x0a5d0',42448 union all select 1955,'0x14573',83315 
			union all select 1956,'0x052d0',21200 union all select 1957,'0x0a9a8',43432 
			union all select 1958,'0x0e950',59728 union all select 1959,'0x06aa0',27296 
			union all select 1960,'0x0aea6',44710 union all select 1961,'0x0ab50',43856 
			union all select 1962,'0x04b60',19296 union all select 1963,'0x0aae4',43748 
			union all select 1964,'0x0a570',42352 union all select 1965,'0x05260',21088 
			union all select 1966,'0x0f263',62051 union all select 1967,'0x0d950',55632 
			union all select 1968,'0x05b57',23383 union all select 1969,'0x056a0',22176 
			union all select 1970,'0x096d0',38608 union all select 1971,'0x04dd5',19925 
			union all select 1972,'0x04ad0',19152 union all select 1973,'0x0a4d0',42192 
			union all select 1974,'0x0d4d4',54484 union all select 1975,'0x0d250',53840 
			union all select 1976,'0x0d558',54616 union all select 1977,'0x0b540',46400 
			union all select 1978,'0x0b5a0',46496 union all select 1979,'0x195a6',103846 
			union all select 1980,'0x095b0',38320 union all select 1981,'0x049b0',18864 
			union all select 1982,'0x0a974',43380 union all select 1983,'0x0a4b0',42160 
			union all select 1984,'0x0b27a',45690 union all select 1985,'0x06a50',27216 
			union all select 1986,'0x06d40',27968 union all select 1987,'0x0af46',44870 
			union all select 1988,'0x0ab60',43872 union all select 1989,'0x09570',38256 
			union all select 1990,'0x04af5',19189 union all select 1991,'0x04970',18800 
			union all select 1992,'0x064b0',25776 union all select 1993,'0x074a3',29859 
			union all select 1994,'0x0ea50',59984 union all select 1995,'0x06b58',27480 
			union all select 1996,'0x055c0',21952 union all select 1997,'0x0ab60',43872 
			union all select 1998,'0x096d5',38613 union all select 1999,'0x092e0',37600 
			union all select 2000,'0x0c960',51552 union all select 2001,'0x0d954',55636 
			union all select 2002,'0x0d4a0',54432 union all select 2003,'0x0da50',55888 
			union all select 2004,'0x07552',30034 union all select 2005,'0x056a0',22176 
			union all select 2006,'0x0abb7',43959 union all select 2007,'0x025d0',9680 
			union all select 2008,'0x092d0',37584 union all select 2009,'0x0cab5',51893 
			union all select 2010,'0x0a950',43344 union all select 2011,'0x0b4a0',46240 
			union all select 2012,'0x0baa4',47780 union all select 2013,'0x0ad50',44368 
			union all select 2014,'0x055d9',21977 union all select 2015,'0x04ba0',19360 
			union all select 2016,'0x0a5b0',42416 union all select 2017,'0x15176',86390 
			union all select 2018,'0x052b0',21168 union all select 2019,'0x0a930',43312 
			union all select 2020,'0x07954',31060 union all select 2021,'0x06aa0',27296 
			union all select 2022,'0x0ad50',44368 union all select 2023,'0x05b52',23378 
			union all select 2024,'0x04b60',19296 union all select 2025,'0x0a6e6',42726 
			union all select 2026,'0x0a4e0',42208 union all select 2027,'0x0d260',53856 
			union all select 2028,'0x0ea65',60005 union all select 2029,'0x0d530',54576 
			union all select 2030,'0x05aa0',23200 union all select 2031,'0x076a3',30371 
			union all select 2032,'0x096d0',38608 union all select 2033,'0x04bd7',19415 
			union all select 2034,'0x04ad0',19152 union all select 2035,'0x0a4d0',42192 
			union all select 2036,'0x1d0b6',118966 union all select 2037,'0x0d250',53840 
			union all select 2038,'0x0d520',54560 union all select 2039,'0x0dd45',56645 
			union all select 2040,'0x0b5a0',46496 union all select 2041,'0x056d0',22224 
			union all select 2042,'0x055b2',21938 union all select 2043,'0x049b0',18864 
			union all select 2044,'0x0a577',42359 union all select 2045,'0x0a4b0',42160 
			union all select 2046,'0x0aa50',43600 union all select 2047,'0x1b255',111189 
			union all select 2048,'0x06d20',27936 union all select 2049,'0x0ada0',44448
) as temp
WHERE temp.yearId=@i    
    
    --传回农历年的总天数    
    SET @j=32768    
    WHILE @j>8    
    BEGIN    
      IF @iLunar & @j >0    
        SET @yDays=@yDays+1    
      SET @j=@j/2    
    END    
    
    --传回农历年闰哪个月 1-12 , 没闰传回 0    
    SET @mLeap = @iLunar & 15    
    
    --传回农历年闰月的天数 ,加在年的总天数上    
    IF @mLeap > 0    
    BEGIN    
      IF @iLunar & 65536 > 0    
        SET @mLeapNum=30    
      ELSE     
        SET @mLeapNum=29    
    
      SET @yDays=@yDays+@mLeapNum    
    END    
        
    SET @offset=@offset-@yDays    
    SET @i=@i+1    
END    
      
IF @offset <= 0    
BEGIN    
    SET @offset=@offset+@yDays    
    SET @i=@i-1    
END    
--确定农历年结束      
SET @YEAR=@i   

--确定农历月开始    
SET @i = 1    
SELECT @iLunar=temp.dataInt FROM 
(select 1900 as yearid,'0x04bd8' as data,19416 as dataint union all select 1901,'0x04ae0',19168 
			union all select 1902,'0x0a570',42352 union all select 1903,'0x054d5',21717 
			union all select 1904,'0x0d260',53856 union all select 1905,'0x0d950',55632 
			union all select 1906,'0x16554',91476 union all select 1907,'0x056a0',22176 
			union all select 1908,'0x09ad0',39632 union all select 1909,'0x055d2',21970 
			union all select 1910,'0x04ae0',19168 union all select 1911,'0x0a5b6',42422 
			union all select 1912,'0x0a4d0',42192 union all select 1913,'0x0d250',53840 
			union all select 1914,'0x1d255',119381 union all select 1915,'0x0b540',46400 
			union all select 1916,'0x0d6a0',54944 union all select 1917,'0x0ada2',44450 
			union all select 1918,'0x095b0',38320 union all select 1919,'0x14977',84343 
			union all select 1920,'0x04970',18800 union all select 1921,'0x0a4b0',42160 
			union all select 1922,'0x0b4b5',46261 union all select 1923,'0x06a50',27216 
			union all select 1924,'0x06d40',27968 union all select 1925,'0x1ab54',109396 
			union all select 1926,'0x02b60',11104 union all select 1927,'0x09570',38256 
			union all select 1928,'0x052f2',21234 union all select 1929,'0x04970',18800 
			union all select 1930,'0x06566',25958 union all select 1931,'0x0d4a0',54432 
			union all select 1932,'0x0ea50',59984 union all select 1933,'0x06e95',28309 
			union all select 1934,'0x05ad0',23248 union all select 1935,'0x02b60',11104 
			union all select 1936,'0x186e3',100067 union all select 1937,'0x092e0',37600 
			union all select 1938,'0x1c8d7',116951 union all select 1939,'0x0c950',51536 
			union all select 1940,'0x0d4a0',54432 union all select 1941,'0x1d8a6',120998 
			union all select 1942,'0x0b550',46416 union all select 1943,'0x056a0',22176 
			union all select 1944,'0x1a5b4',107956 union all select 1945,'0x025d0',9680 
			union all select 1946,'0x092d0',37584 union all select 1947,'0x0d2b2',53938 
			union all select 1948,'0x0a950',43344 union all select 1949,'0x0b557',46423 
			union all select 1950,'0x06ca0',27808 union all select 1951,'0x0b550',46416 
			union all select 1952,'0x15355',86869 union all select 1953,'0x04da0',19872 
			union all select 1954,'0x0a5d0',42448 union all select 1955,'0x14573',83315 
			union all select 1956,'0x052d0',21200 union all select 1957,'0x0a9a8',43432 
			union all select 1958,'0x0e950',59728 union all select 1959,'0x06aa0',27296 
			union all select 1960,'0x0aea6',44710 union all select 1961,'0x0ab50',43856 
			union all select 1962,'0x04b60',19296 union all select 1963,'0x0aae4',43748 
			union all select 1964,'0x0a570',42352 union all select 1965,'0x05260',21088 
			union all select 1966,'0x0f263',62051 union all select 1967,'0x0d950',55632 
			union all select 1968,'0x05b57',23383 union all select 1969,'0x056a0',22176 
			union all select 1970,'0x096d0',38608 union all select 1971,'0x04dd5',19925 
			union all select 1972,'0x04ad0',19152 union all select 1973,'0x0a4d0',42192 
			union all select 1974,'0x0d4d4',54484 union all select 1975,'0x0d250',53840 
			union all select 1976,'0x0d558',54616 union all select 1977,'0x0b540',46400 
			union all select 1978,'0x0b5a0',46496 union all select 1979,'0x195a6',103846 
			union all select 1980,'0x095b0',38320 union all select 1981,'0x049b0',18864 
			union all select 1982,'0x0a974',43380 union all select 1983,'0x0a4b0',42160 
			union all select 1984,'0x0b27a',45690 union all select 1985,'0x06a50',27216 
			union all select 1986,'0x06d40',27968 union all select 1987,'0x0af46',44870 
			union all select 1988,'0x0ab60',43872 union all select 1989,'0x09570',38256 
			union all select 1990,'0x04af5',19189 union all select 1991,'0x04970',18800 
			union all select 1992,'0x064b0',25776 union all select 1993,'0x074a3',29859 
			union all select 1994,'0x0ea50',59984 union all select 1995,'0x06b58',27480 
			union all select 1996,'0x055c0',21952 union all select 1997,'0x0ab60',43872 
			union all select 1998,'0x096d5',38613 union all select 1999,'0x092e0',37600 
			union all select 2000,'0x0c960',51552 union all select 2001,'0x0d954',55636 
			union all select 2002,'0x0d4a0',54432 union all select 2003,'0x0da50',55888 
			union all select 2004,'0x07552',30034 union all select 2005,'0x056a0',22176 
			union all select 2006,'0x0abb7',43959 union all select 2007,'0x025d0',9680 
			union all select 2008,'0x092d0',37584 union all select 2009,'0x0cab5',51893 
			union all select 2010,'0x0a950',43344 union all select 2011,'0x0b4a0',46240 
			union all select 2012,'0x0baa4',47780 union all select 2013,'0x0ad50',44368 
			union all select 2014,'0x055d9',21977 union all select 2015,'0x04ba0',19360 
			union all select 2016,'0x0a5b0',42416 union all select 2017,'0x15176',86390 
			union all select 2018,'0x052b0',21168 union all select 2019,'0x0a930',43312 
			union all select 2020,'0x07954',31060 union all select 2021,'0x06aa0',27296 
			union all select 2022,'0x0ad50',44368 union all select 2023,'0x05b52',23378 
			union all select 2024,'0x04b60',19296 union all select 2025,'0x0a6e6',42726 
			union all select 2026,'0x0a4e0',42208 union all select 2027,'0x0d260',53856 
			union all select 2028,'0x0ea65',60005 union all select 2029,'0x0d530',54576 
			union all select 2030,'0x05aa0',23200 union all select 2031,'0x076a3',30371 
			union all select 2032,'0x096d0',38608 union all select 2033,'0x04bd7',19415 
			union all select 2034,'0x04ad0',19152 union all select 2035,'0x0a4d0',42192 
			union all select 2036,'0x1d0b6',118966 union all select 2037,'0x0d250',53840 
			union all select 2038,'0x0d520',54560 union all select 2039,'0x0dd45',56645 
			union all select 2040,'0x0b5a0',46496 union all select 2041,'0x056d0',22224 
			union all select 2042,'0x055b2',21938 union all select 2043,'0x049b0',18864 
			union all select 2044,'0x0a577',42359 union all select 2045,'0x0a4b0',42160 
			union all select 2046,'0x0aa50',43600 union all select 2047,'0x1b255',111189 
			union all select 2048,'0x06d20',27936 union all select 2049,'0x0ada0',44448
) as temp
 WHERE temp.yearId=@YEAR

--判断那个月是润月    
SET @mLeap = @iLunar & 15    
SET @bLeap = 0  

WHILE @i < 13 AND @offset > 0    
BEGIN    
    --判断润月    
    SET @mDays=0    
    IF (@mLeap > 0 AND @i = (@mLeap+1) AND @bLeap=0)    
    BEGIN--是润月    
      SET @i=@i-1    
      SET @bLeap=1    
      --传回农历年闰月的天数    
      IF @iLunar & 65536 > 0    
        SET @mDays = 30    
      ELSE     
        SET @mDays = 29    
    END    
    ELSE    
    --不是润月    
    BEGIN    
      SET @j=1    
      SET @temp = 65536     
      WHILE @j<=@i    
      BEGIN    
        SET @temp=@temp/2    
        SET @j=@j+1    
      END    
    
      IF @iLunar & @temp > 0    
        SET @mDays = 30    
      ELSE    
        SET @mDays = 29    
    END    
      
    --解除闰月 
    IF @bLeap=1 AND @i= (@mLeap+1) 
      SET @bLeap=0

SET @offset=@offset-@mDays    
    SET @i=@i+1    
END    
    
IF @offset <= 0    
BEGIN    
    SET @offset=@offset+@mDays    
    SET @i=@i-1    
END   

--确定农历月结束      
SET @MONTH=@i 
    
--确定农历日结束      
SET @DAY=@offset    
if @bLeap=1 
SET @OUTPUTDATE=convert(varchar(10),CAST((CAST(@YEAR AS VARCHAR(4))+'-'+CAST(@MONTH AS VARCHAR(2))+'-'+CAST(@DAY AS VARCHAR(2))) AS DATETIME) ,120)--+',1'
else
SET @OUTPUTDATE=convert(varchar(10),CAST((CAST(@YEAR AS VARCHAR(4))+'-'+CAST(@MONTH AS VARCHAR(2))+'-'+CAST(@DAY AS VARCHAR(2))) AS DATETIME) ,120)--+',0'
RETURN @OUTPUTDATE 
END
go
